Can you get a different response with generic Zoloft when manufacturer is changed?

I just was switched from greenstone brand sertraline -Pfizer’s generic division- To Acihealth care brand. I did not feel well. Motivation , energy, feelings. I went back to greenstone and felt better. But greenstone is not preferred at my CVS anymore? I think Greenstone is superior quality. I’ll have to find a better option.